Improvement in pulverizing and mixing-cylinders



ltttd- (Stabat @wat @titille WILLIAM COGGESHALL, OF SPRINGFIELD, OHIO, AND `JOHN W. STANLEY, OF CHICAGO, ILLINOIS.

Letters Patent No. 92,585, dated July 13, 1869.

I MPnovEMENT IN PULvnRIzm-GAND MIX'INcYLINDERs.

The Schedule referred to in these Lettere Patent and making part of the same.

reference marked thereon, and being a part of this.

specification, in which- Figure 1 is a perspective view of our invention, with a portion of the cylinder broken out, to show its interior arrangement, and

Figure 2 is across-section of the same.

Figure 3 is a vertical section of the interior arrangement.

Like figures indicate like partsin each figure.

The nature of this invention relates to theconstruction of an apparatus for pulverizing paints, drugs, and other materials, placed within a revolving cylinder, by the action thereon of one or more heavy metallic rollers, revolvingby their own gravity, at the bottom of the cylinder, and in an anangement for thoroughly mixing the pnlverized contents of the-same.

A, in the drawings, represents' a proper fra-mc, surmounted by bearings B, in which revolves a shaft, C, carrying asti-ong metallic cylinder, D, having in its periphery it longitudinal opening, closed, when inv operation, by adoor, E. l

The cylinder may receive its motion through proper gearing from an intennediate shaft, as shown, or in any othersnitable manner.

F are rollers, of any hard metal, loosely placed in.- the bottom of the cylinder, extending its length, and guided between the annular anges G, iig. 2, projecting inwjard from the heads fl of the cylinder, their weight causing them to gmvitate tothe lowest point in the cylinder, rolling vover and pulverizing the material contained in it.

the purposes specified.

H are rods or bars, extending the lengt-h of the cy1.

inder, and secured to the heads withinthe annular flanges G.

vThese rods are provided with flights It, projecting outwardly from the-same, and which resemble, 'in forni, segments of a screw-thread of long pitch, for thoroughly mixing the pulvel'ized contents of the cylinder, the pitch of those of one rod being in opposition to those on the other.

Its operation may be explained as follows:

Supposing that it is desired to pulverize au adulterated article of paint, the requisite quantity of ground lead, barytes, and coloring-matter, in their proper profv portions, being placed in the cylinder, its door E is securely closed, and it is caused to revolve. The heavy rollers F, seeking the lowest part of the cylinder, will roll over and in the mixture, and speedily reduce it to powder; the annular flanges G preventing the vrollers from rising above the mixture, while the iiights h, passing through it, mix it intimately.

When the mixture is pulverized to the proper degree, the revolution of the cylinder is stopped, and the door removed, when a few turns will discharge its contents iu a drawer in the lower partof theframe A, it being understood that a proper casing slu'rounds the cylinder while being discharged.

What we claim as our invention, and desire to secure by Letters Patent, is

The cylinder D, provided with annular flanges G, stationaryrods or bars H, flight-s h, and rollers F, all arranged to operate substantially as described, and for WILLIAM OOGGESHALL. JOHN W. STANLEY. Witnesses as to WILLIAM GoGGEsHALL:

D. M. COCHRAN, A. P. LINN COCHRAN. Witnesses as to JOHN W. STANLEY:

H S. SPRAGUE, L. O. HYDE. 

